Natalia Blind Teacher

There is a blind teacher who will teach Natalia two new artes if you find him

Your first encounter with him can happen after you make your first return from Yulia City. Go to Sheridan Port and talk to an old man and you will bring him to Daht Port and there he will teach you Natalia's first move the Gallant Barrage.

Your second encounter with him can happen after you completed Zaleho Volcano twice. For reference it is after you find the 7th Phone Stone. Go to Daht port to get a cutscene which will explain more about the Blind Teacher and how he actually has a connection with Jade. He will then teach Natalia Healing force.